Denny's Corp. /zigman2/quotes/206956394/composite DENN -0.78% said Monday that it's giving away free Beyond Burgers, plant-based burgers made with Beyond Meat Inc. /zigman2/quotes/211617595/composite BYND +3.45% , on January 30 to launch the menu item nationwide. The Beyond Burger will be available at all 1,700 Denny's locations. The giveaway will take place from 11am to 10pm on Thursday. The Beyond Burger is made with All-American sauce, American cheese and a multi-grain bun. Denny's previously gave away free Beyond Burgers on Halloween to commemorate the launch of the item in Los Angeles. Denny's stock s up 17.7% over the past year, but down 2.7% in the past three months. Beyond Meat is up 18.5% over the last three months. And the S&P 500 index /zigman2/quotes/210599714/realtime SPX +0.12% has gained 9% for the past three months.